聚甲基丙烯酸羟乙酯水凝胶材料的制备及其性能（英文）

Preparation and Properties of PHEMA Hydrogel Material

以甲基丙烯酸羟乙酯(HEMA)为聚合单体,通过乳液聚合反应制备了聚甲基丙烯酸羟乙酯(PHEMA)水凝胶。由PHEMA水凝胶的平衡含水率和力学性能来确定最佳的制备反应条件。采用SEM和UV光谱来分别测定PHEMA水凝胶膜的表面形貌和透光率。实验结果表明在最佳反应条件下的单体转化率约为88%,这种PHEMA水凝胶有着平整光滑的表面,拉伸强度为0.32MPa,平衡含水率为42.8%,在可见光区的透光率达到了92%。这种PHEMA水凝胶有望用作人工眼角膜的光学中心材料。

2-Hydroxyethyl methacrylate(HEMA) was used as monomer to prepare the poly(2-hydroxyethyl methacrylate)(PHEMA) hydrogel. Based on equilibrium moisture content and mechanical strength of PHEMA hydrogel, the optimum preparation conditions of PHEMA hydrogel can be obtained. The surface morphology and the light transmission of PHEMA hydrogel membrane were measured by SEM and UV spectroscopy, respectively. The PHEMA hydrogel prepared under the optimum conditions possess smooth surface, monomer conversion is about 88%, tensile strength of 0.32 MPa, equilibrium moisture content of 42.8% and light transmittance of 92%. This PHEMA hydrogel is expected to be used as optical central material of the artificial cornea.